 A transaction that gave the city a $1.83 billion cash infusion leased the Skyway to the Skyway Concession Company, a joint-venture between the Australian Macquarie Infrastructure Group and Spanish Cintra Concesiones de Infraestructuras de Transporte S.A., which assumed operations on the Skyway on a 99-year operating lease.The agreement between SCC and the city of Chicago marked the first time an existing toll road was moved from public to private operation in the United States.I-90 has two related auxiliary Interstate Highways within Illinois.